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Finding the Fourth Proportional to 439,661.48, 659,270.46 and 313,229.48

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Solution

The fourth proportional to 439,661.48, 659,270.46 and 313,229.48 is: 469,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,661.48 : 659,270.46 = 313,229.48 : x
  2. Step 2: Convert to fraction form
    439,661.48/659,270.46 = 313,229.48/x
  3. Step 3: Cross multiply
    439,661.48x = 659,270.46 × 313,229.48
  4. Step 4: Simplify right side
    439,661.48x = 206,502,943,365.16
  5. Step 5: Solve for x
    x = 206,502,943,365.16/439,661.48
  6. Step 6: Final answer
    x = 469,686.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.